Voltage assembly for burning driving chip of AMOLED (Active Matrix / Organic Light Emitting Diode) module

Abstract

The utility model discloses a voltage assembly used for burning an AMOLED module driving chip, comprising a driving chip, the driving chip comprises a driving input voltage terminal, the driving chip is internally provided with a charge pump unit, a built-in voltage stabilization unit and a VOTP voltage unit, the charge pump unit comprises a charge pump output terminal, the charge pump output terminal is connected with the voltage stabilization unit, the VOTP voltage unit is connected with the charge pump output terminal, and the VOTP voltage unit is connected with the charge pump output terminal. The charge pump output terminal is coupled with the built-in voltage stabilizing unit, and the built-in voltage stabilizing unit is coupled with the VOTP voltage unit. Because boosting is carried out only through the internal structure of the driving chip, the cost of an external boosting circuit is saved, and the circuit is more stable and safer, and is suitable for burning the GAMMA calibration array of a large batch of AMOLED modules.

Description

Technical Field

[0001] The utility model relates to an AMOLED module, more specifically, to a voltage component used for burning a driving chip of the AMOLED module. Background Art

[0002] AMOLED is widely used in smartwatch projects due to its bright display, high contrast and small screen. Smartwatches are becoming more and more comprehensive, integrating touch, display, NFC payment and other functions. In addition, in order to ensure that the display effect of customers can meet the AMOLED module of GAMMA 2.2 curve, the calibrated 2.2 GAMMA curve value needs to be burned into the derive IC on the AMOLED when shipping. Since the burning action is required, a voltage that can provide burning needs to be established on the FPC, so a set of components and electronic circuits must be introduced.

[0003] In order to make the display GAMMA curve of each AMOLED module meet the requirements, the AMOLED module needs to add GAMMA calibration and burning fixtures when it is produced in the factory line. The AMOLED module needs to use VOTP voltage to supply the AMOLED DriverIC when burning. Taking SH8601 as an example, when burning the GAMMA calibration array into the Driver IC, it is necessary to provide a voltage VOTP 6.2V to the SH8601, which requires a circuit that can provide 6.2V voltage. This voltage circuit consists of 1 chip ZXLD1615ET5TA, 1 diode, 1 inductor, 1 MOS tube, 3 capacitors and 6 resistors. Therefore, when burning GAMMA, in order to obtain the VOTP voltage, it is necessary to invest related expenses to make a boost VOTP circuit board, and in the process of continuous use, the VOTP circuit board will also age and be scrapped, so the cost here will also be a lot, so other means need to be used to save the investment cost in this regard.

[0004] Chinese invention patent document CN105679255A discloses a method for burning the gamma value of an LCD display screen, comprising: when the LCD display screen is turned on, obtaining RGB image information of the LCD display screen under different power supply voltages; obtaining a current gamma value curve value corresponding to the RGB image information according to the RGB image information; when the current gamma value curve value is consistent with a preset gamma value curve value, burning the current gamma value curve value into a chip of the LCD display screen.

[0005] Obviously, the patent realizes automatic OTP burning of Gamma value and correction of RGBW color. However, this method cannot solve the existing problem of high burning costs. Utility Model Content

[0006] Based on this, it is necessary to provide a voltage component for burning the AMOLED module driver chip in view of the above technical problems. The voltage component for burning the AMOLED module driver chip includes a driver chip, the driver chip includes a driving input voltage terminal, the driver chip is provided with a charge pump unit, a built-in voltage stabilizing unit and a VOTP voltage unit, the charge pump unit includes a charge pump output terminal, wherein the charge pump output terminal is coupled to the built-in voltage stabilizing unit, and the built-in voltage stabilizing unit is coupled to the VOTP voltage unit. Since the voltage is boosted only through the internal structure of the driver chip, the cost of the external boost circuit is saved, and it is also more stable and safe, which is suitable for the GAMMA calibration array burning of large quantities of AMOLED modules.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A voltage component for burning an AMOLED module driver chip, the voltage component for burning an AMOLED module driver chip comprising a driver chip, the driver chip comprising a driving input voltage terminal, the driver chip being provided with a charge pump unit, a built-in voltage stabilizing unit and a VOTP voltage unit, the charge pump unit comprising a charge pump output terminal, wherein the charge pump output terminal is coupled to the built-in voltage stabilizing unit, and the built-in voltage stabilizing unit is coupled to the VOTP voltage unit.

[0009] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the driving input voltage terminal is coupled to the VCC voltage unit.

[0010] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the voltage of the VCC voltage unit is 3.3V.

[0011] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the output voltage of the built-in voltage stabilizing unit is 6.2V.

[0012] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the built-in voltage stabilizing unit is a LOD voltage stabilizing unit.

[0013] A voltage component for burning an AMOLED module driver chip, the voltage component for burning an AMOLED module driver chip comprising a driver chip, the driver chip comprising a driver input voltage terminal and a driver output voltage terminal AVDD, the driver chip being provided with a charge pump unit, a built-in voltage stabilizing unit and a VOTP voltage unit, wherein the driver output voltage terminal AVDD is coupled to the built-in voltage stabilizing unit, and the built-in voltage stabilizing unit is coupled to the VOTP voltage unit.

[0014] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the driving input voltage terminal is coupled to the VCC voltage unit.

[0015] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the voltage of the VCC voltage unit is 3.3V.

[0016] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, the output voltage of the built-in voltage stabilizing unit is 6.2V, and the built-in voltage stabilizing unit is a LOD voltage stabilizing unit.

[0017] As a preferred implementation of the voltage component for AMOLED module driver chip burning provided by the utility model, an external voltage stabilizing unit is provided downstream of the VCC voltage unit.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a voltage component for burning an AMOLED module driver chip. The VCC voltage unit 5 of the voltage component is provided with a 3.3V voltage by an external terminal, and is boosted by a charge pump unit 2 to obtain a 6.6V voltage on a driver output voltage terminal AVDD12. Through the voltage stabilization of a built-in voltage stabilization unit 3, a required 6.2V voltage is obtained on a VOTP voltage unit 4 for internal use of the driver chip. Since the voltage is boosted only through the internal structure of the driver chip, the cost of an external boost circuit is saved, and the voltage is more stable and safe, and is suitable for burning a GAMMA calibration array of a large number of AMOLED modules.

[0020] In addition, an external voltage stabilizing unit 6 may be provided downstream of the VCC voltage unit 5, and the external voltage stabilizing unit 6 also uses an LDO voltage stabilizing circuit to stabilize the voltage of the VCC voltage unit 5. By using the external voltage stabilizing unit 6 downstream of the VCC voltage unit 5, the voltage of the VCC voltage unit 5 can be effectively stabilized, further improving the stability and reliability of the voltage component used for AMOLED module driver chip burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the structure of a voltage component for AMOLED module driver chip burning according to the utility model;

[0023] Figure 2 It is a three-dimensional structural schematic diagram of another embodiment of the voltage component for AMOLED module driver chip burning of the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of another embodiment of the voltage component for AMOLED module driver chip burning of the utility model;

[0025] The markings in the figure are as follows: 1. Driver chip; 11. Driver input voltage terminal; 12. Driver output voltage terminal AVDD; 2. Charge pump unit; 21. Charge pump output terminal; 3. Built-in voltage regulator unit; 4. VOTP voltage unit; 5. VCC voltage unit; 6. External voltage regulator unit. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] As described in the background technology, the prior art is widely used in smart watch projects for AMOLED due to its bright display effect, high contrast and small screen. Smart watches have more and more comprehensive functions, integrating a series of functions such as touch, display, NFC payment, etc., and in order to ensure that the display effect obtained by customers can meet the AMOLED module of GAMMA 2.2 curve, the calibrated 2.2 GAMMA curve value needs to be burned into the derive IC on the AMOLED when shipping. Since the burning action is required, a voltage that can provide burning needs to be established on the FPC, so a set of electronic circuits of components must be introduced. In order to make the display GAMMA curve of each AMOLED module meet the requirements, the AMOLED module must add GAMMA calibration and burning fixtures when it is produced in the factory line. The AMOLED module needs to use VOTP voltage to supply the AMOLED Driver IC when burning. Take SH8601 as an example. When programming the GAMMA calibration array to the Driver IC, it is necessary to provide a voltage of VOTP 6.2V to SH8601. This requires a circuit that can provide 6.2V voltage. This voltage circuit consists of 1 chip ZXLD1615ET5TA, 1 diode, 1 inductor, 1 MOS tube, 3 capacitors and 6 resistors. Therefore, when programming the GAMMA, in order to obtain the VOTP voltage, it is necessary to invest in the relevant costs to make a boost VOTP circuit board. In addition, during continuous use, the VOTP circuit board will also age and become scrapped, so the cost here will also be high, so other means need to be used to save the investment costs in this regard.

[0028] In order to solve this technical problem, the utility model provides a voltage component for burning an AMOLED module driver chip, comprising a driver chip 1, the driver chip 1 comprising a driving input voltage terminal 11, the driver chip 1 is provided with a charge pump unit 2, a built-in voltage stabilizing unit 3 and a VOTP voltage unit 4, the charge pump unit 2 comprises a charge pump output terminal 21, wherein the charge pump output terminal 21 is coupled to the built-in voltage stabilizing unit 3, and the built-in voltage stabilizing unit 3 is coupled to the VOTP voltage unit 4.

[0029] Through the above structural design, the VCC voltage unit 5 is provided with a 3.3V voltage from the external terminal, which is boosted by the charge pump unit 2, and the voltage obtained at the charge pump output terminal 21 is between 6.4V and 6.6V. Then, through the voltage stabilization of the built-in voltage stabilization unit 3, the required 6.2V voltage is obtained on the VOTP voltage unit 4 for internal use of the driver chip. Since the voltage is only boosted through the internal structure of the driver chip, the cost of the external boost circuit is saved, and it is also more stable and safe, suitable for the GAMMA calibration array burning of large quantities of AMOLED modules.

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] Example 1

[0034] like Figure 1 As shown, the voltage component for burning the AMOLED module driver chip includes a driver chip 1, the driver chip 1 includes a driving input voltage terminal 11, the driver chip 1 is provided with a charge pump unit 2, a built-in voltage stabilizing unit 3 and a VOTP voltage unit 4, the charge pump unit 2 includes a charge pump output terminal 21,

[0035] The charge pump output terminal 21 is coupled to the built-in voltage stabilizing unit 3 , and the built-in voltage stabilizing unit 3 is coupled to the VOTP voltage unit 4 .

[0036] The driving input voltage terminal 11 is coupled to the VCC voltage unit 5 .

[0037] It should be noted that the voltage of the VCC voltage unit 5 is 3.3V.

[0038] In addition, the output voltage of the built-in voltage stabilizing unit 3 is 6.2 V. The built-in voltage stabilizing unit 3 is a LOD voltage stabilizing unit.

[0039] The working mode of this embodiment is described below.

[0040] The VCC voltage unit 5 is provided with a 3.3V voltage from the external end, which is boosted by the charge pump unit 2, and the voltage obtained at the charge pump output terminal 21 is between 6.4V and 6.6V. Then, through the voltage stabilization of the built-in voltage stabilization unit 3, the required 6.2V voltage is obtained on the VOTP voltage unit 4 for internal use of the driver chip. Since the voltage is boosted only through the internal structure of the driver chip, the cost of the external boost circuit is saved, and it is also more stable and safe, which is suitable for the GAMMA calibration array burning of large quantities of AMOLED modules.

[0041] Example 2

[0042] like Figure 2 As shown, the voltage component for AMOLED module driver chip burning provided in Example 1 is further optimized. Specifically, the voltage component for AMOLED module driver chip burning includes a driver chip 1, the driver chip 1 includes a driving input voltage terminal 11 and a driving output voltage terminal AVDD12, and the driver chip 1 is provided with a charge pump unit 2, a built-in voltage stabilizing unit 3 and a VOTP voltage unit 4.

[0043] The driving output voltage terminal AVDD12 is coupled to the built-in voltage stabilizing unit 3 , and the built-in voltage stabilizing unit 3 is coupled to the VOTP voltage unit 4 .

[0044] The driving input voltage terminal 11 is coupled to the VCC voltage unit 5 .

[0045] It should be noted that the voltage of the VCC voltage unit 5 is 3.3V.

[0046] In addition, the output voltage of the built-in voltage stabilizing unit 3 is 6.2 V. The built-in voltage stabilizing unit 3 is a LOD voltage stabilizing unit.

[0047] The working mode of this embodiment is described below.

[0048] The VCC voltage unit 5 is provided with a 3.3V voltage from the external terminal, which is boosted by the charge pump unit 2 to obtain a 6.6V voltage at the driver output voltage terminal AVDD12. Through the voltage stabilization of the built-in voltage stabilization unit 3, the required 6.2V voltage is obtained at the VOTP voltage unit 4 for internal use of the driver chip. Since the voltage is boosted only through the internal structure of the driver chip, the cost of the external boost circuit is saved, and it is more stable and safe, which is suitable for the GAMMA calibration array burning of large quantities of AMOLED modules.

[0049] Example 3

[0050] like Figure 3 As shown, the voltage component for burning the AMOLED module driver chip provided in Example 1 or 2 is further optimized. Specifically, an external voltage stabilizing unit 6 is provided downstream of the VCC voltage unit 5. The external voltage stabilizing unit 6 also adopts an LDO voltage stabilizing circuit to stabilize the voltage of the VCC voltage unit 5.

[0051] The working mode of this embodiment is described below.

[0052] By using the external voltage stabilizing unit 6 downstream of the VCC voltage unit 5, the voltage of the VCC voltage unit 5 can be effectively stabilized, further improving the stability and reliability of the voltage component used for burning the AMOLED module driver chip.

[0053] In addition, the transistor is a field effect transistor or a triode. When these crystals are field effect transistors, they can be N-type transistors (such as metal-oxide-semiconductor field effect transistors (N-Metal-Oxide-Semiconductor, NMOS)), or P-type metal-oxide-semiconductor field effect transistors, complementary metal-oxide-semiconductor field effect transistors, and other circuit structure types.

[0054] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A voltage component for burning an AMOLED module driver chip, characterized in that: The voltage component for burning an AMOLED module driver chip comprises a driver chip (1), the driver chip (1) comprises a driver input voltage terminal (11), the driver chip (1) is provided with a charge pump unit (2), a built-in voltage stabilizing unit (3) and a VOTP voltage unit (4), the charge pump unit (2) comprises a charge pump output terminal (21), wherein the charge pump output terminal (21) is coupled to the built-in voltage stabilizing unit (3), and the built-in voltage stabilizing unit (3) is coupled to the VOTP voltage unit (4).

2. The voltage component for AMOLED module driver chip burning according to claim 1, characterized in that: The driving input voltage terminal (11) is coupled to the VCC voltage unit (5).

3. The voltage component for AMOLED module driver chip burning according to claim 2, characterized in that: The voltage of the VCC voltage unit (5) is 3.3V.

4. The voltage component for AMOLED module driver chip burning according to claim 1, characterized in that: The output voltage of the built-in voltage stabilizing unit (3) is 6.2V.

5. The voltage component for AMOLED module driver chip burning according to claim 1, characterized in that: The built-in voltage stabilizing unit (3) is a LOD voltage stabilizing unit.

6. A voltage component for burning an AMOLED module driver chip, characterized in that: The voltage component for burning an AMOLED module driver chip comprises a driver chip (1), wherein the driver chip (1) comprises a driver input voltage terminal (11) and a driver output voltage terminal AVDD (12), wherein the driver chip (1) is provided with a charge pump unit (2), a built-in voltage stabilizing unit (3) and a VOTP voltage unit (4), wherein the driver output voltage terminal AVDD (12) is coupled to the built-in voltage stabilizing unit (3), and the built-in voltage stabilizing unit (3) is coupled to the VOTP voltage unit (4).

7. The voltage component for AMOLED module driver chip burning according to claim 6, characterized in that: The driving input voltage terminal (11) is coupled to the VCC voltage unit (5).

8. The voltage component for AMOLED module driver chip programming according to claim 7, characterized in that: The voltage of the VCC voltage unit (5) is 3.3V.

9. The voltage component for AMOLED module driver chip burning according to claim 6, characterized in that: The output voltage of the built-in voltage stabilizing unit (3) is 6.2V, and the built-in voltage stabilizing unit (3) is a LOD voltage stabilizing unit.

10. The voltage component for AMOLED module driver chip burning according to claim 7, characterized in that: An external voltage stabilization unit (6) is provided downstream of the VCC voltage unit (5).

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